alleryStart learning →What is the approximate diameter of a microfilament?
AAbout 25 nanometers
BAbout 8 to 10 nanometers
CAbout 7 nanometers
DAbout 70 nanometers
Answer & Solution
Correct answer: C. About 7 nanometers
1. Microfilaments are the narrowest of the three cytoskeletal fiber types.
2. Their diameter is about 7 nanometers.
3. Intermediate filaments measure 8 to 10 nanometers and microtubules about 25 nanometers.
4. The microfilament figure is therefore about 7 nanometers.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.5 The Cytoskeleton_
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